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Вот параметры портов
Да, и вопрос, есть такой параметр echo cancelation = enable, а для факса его надо убрать? И комфортный шум тоже или нет?
GS1002# show voice port 0 / 2
Voice port slot(0)/port(2)
line type = FXO
status = Idle
input gain = 3 db
output gain = 0 db
polarity inverse = disabled
number of rings to answer = 1
ring detect timeout = 3000 msec
ring detect timer = 300 msec
FXO hookflash out = 300 msec
FXO hookflash Digit = 'n'
clear down delay = 0 sec
clear down tone detect = enabled
tie connection = plar 200
description =
GSM PIN Code =
GSM Audio Gain = 10
GSM RTA Ring Gain = 10
translate incoming called-number = -1
translate incoming calling-number = -1
comfort noise generation = enabled
dial tone generation = enabled
echo cancellation = enabled
announcement = enabled
low dtmf gain = -8
high dtmf gain = -5
caller ID = enabled
caller ID type = etsi
caller ID NAME = enabled
DID Type = normal
busyout action = none
backup busyout action = none
current callnumber = -1
holded callnumber = -1

GS1002# show voice port 0 / 3
Voice port slot(0)/port(3)
line type = FXO
status = Idle
input gain = 3 db
output gain = 0 db
polarity inverse = disabled
number of rings to answer = 1
ring detect timeout = 3000 msec
ring detect timer = 300 msec
FXO hookflash out = 300 msec
FXO hookflash Digit = 'n'
clear down delay = 0 sec
clear down tone detect = enabled
tie connection = plar 201
description =
GSM PIN Code =
GSM Audio Gain = 10
GSM RTA Ring Gain = 10
translate incoming called-number = -1
translate incoming calling-number = -1
comfort noise generation = enabled
dial tone generation = enabled
echo cancellation = enabled
announcement = enabled
low dtmf gain = -8
high dtmf gain = -5
caller ID = enabled
caller ID type = etsi
caller ID NAME = enabled
DID Type = normal
busyout action = none
backup busyout action = none
current callnumber = -1
holded callnumber = -1